A Consumer’s Guide to Gem Grading
…Gemstones contain a wide variety of inclusions. In faceted gems, inclusions are defined as anything that will interfere with the free passage…
A Consumer’s Guide to Emerald Treatments
…gems usually have no inclusions visible to the naked eye. Type IIs usually possess inclusions, while Type IIIs almost always do. (Emerald belongs…
Choosing, Rating, and Grading Diamonds
…can see no inclusions at 10X magnification. However, this doesn’t mean you can’t find inclusions with higher magnification.…
Something Blue: Choosing Sapphire Engagement Ring Stones
…beauty. In some rare cases, inclusions can create valuable star sapphires, which show asterism or a “star stone” effect. Inclusions…
Common Sense Gemstone Grading: An Alternative System
…small inclusions recognizable by an expert under 10x loupe magnification. VS2 (Very Small Inclusions): Some small inclusions recognizable…
Phenomenal Gems – Unique Phenomena in Gemstones
…caused by inclusions). While inclusions are judged as with any other stone, also note if they interrupt the star. That will reduce the value.…
Gemology Cheat Sheets
…eye clean. Noticeable inclusions under 10X. Usually eye clean. VS Minor inclusions, somewhat easy to see with 10X. Usually eye clean. Noticeable…
Amber Value, Price, and Jewelry Information
3.1 cm across, by James St. John is licensed under CC By 2.0 Identifying Characteristics Inclusions Amber is noted for its inclusions, which are…
IGS Newsletter